Why are proteins involved in active transport often called "pumps"?Question 23Select one:a.They use energy to move a substance with its concentration gradient.b.They use energy to dislodge the substance from the carrier.c.They use energy to move a substance against its concentration gradient.d.They use energy to bind the substance to the carrier.e.They cause the plasma membrane to invaginate like a pump that pulls up water against the force of gravity.

The force driving simple diffusion is transmembrane pumps, while the energy source for active transport is an electrochemical gradient.Group of answer choicesTrueFalse

Passive membrane transport processes:move solutes down their concentration gradients in the absence of energyalways require the use of channel or carrier proteins to move solutes across the plasma membraneonly transport lipid-soluble solutesrequire the input of energy to move a solute across the plasma membrane

The sodium-potassium pump is considered active transport.Group of answer choicesTrueFalse

Which type of passive transport uses force to push fluid and small solutes through a membrane?Group of answer choicesFacilitated diffusionExocytosisApoptosisFiltrationActive transport

The movement of substances from lower to higher concentration across a semi-permeable membrane that must have a specific protein carrier and use energy is called: A. facilitated diffusion. B. diffusion. C. active transport. D. osmosis. E. endocytosis.